A swimsuit-clad Jessica Alba talks about reprising her role in Sin City's upcoming sequel, her late friend and costar Paul Walker, and more in the July 2014 issue of British GQ

Jessica Alba is sizzling on the big screen—and on newstands. The Sin City actress poses seductively in a navy one-piece bathing suit on the July 2014 cover of British GQ in anticipation for her upcoming film Sin City: A Dame To Kill For.

"There's more of me and I do more than I did in the first one. I have a bit more of a character arc in this one," Alba says of the Sin City sequel. "There's more dancing, but the dancing's really connected to the story. Nancy's a bit of an alcoholic and a bit of a mess and she's depressed and angry. The dances in the movie reflect where she's at."

The mom of two, 33, first took on the role of seductive siren Nancy Callahan in 2005. "I feel much more grounded, much more comfortable, much more saucy," she admits of returning for round two. "Then I was a girl, I was timid, I was afraid, I was so insecure and now I'm a woman and it's different…I'm more uninhibited."

Part of that is feeling more confident about her body. "I have to enhance what I like about my body and my stomach is good," she continued. "My legs I'm not as excited about all the time, but I wouldn't cover up my stomach. That's what women do. Enhance what we've got."

That's exactly what Alba has done over the years in Machete, Fantastic Four, and Honey. In 2005, she stripped down to a bikini for most of Into the Blue, which also costarred her late friend Paul Walker.

"He had a real childlike innocence and he was game to try anything or do anything. He treated everyone with respect and love," she told the mag. "He was never treating anybody differently because of who they were. He was really a guy's guy. And he loved his daughter so much and talked about her all the time. He never cared about Hollywood. He never cared about the hype."